Production Operations

Download A Practical Guide to Content Delivery Networks by Gilbert Held PDF

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By Gilbert Held

With a pragmatic and arranged method of studying and implementation, a pragmatic consultant to content material supply Networks provides a step by step procedure for development a hugely to be had and hugely scalable content material supply community (CDN). CDN refers back to the infrastructure in the back of any carrier that gives software or entry to info to an finish consumer. This booklet deals terminology, strategies, strength difficulties to prevent, and person layers of layout, delivering transparent knowing of the framework for CDNs utilizing a structural and visible method. The textual content emphasizes a best-of-breed approach, permitting a technically sound CDN to be conceived and equipped on virtually any price range.

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Sample text

In comparison, the data link layer uses a protocol to group information into data packets that flow on the network. Because the data link uses a layer 2 protocol, source and destination addresses are indicated in terms of Media Access Control (MAC) addresses. Media Access Control (MAC) addressing MAC addresses are 48 bits or 6 bytes in length, subdivided into a vendor code and identifier that corresponds to the vendor code.

This represents a measurement of network reliability. 9 represent bottlenecks when information flows between ISP networks. The peering point can be viewed as a funnel through which all traffic from one Internet network destined to a different network must flow. Because the flow of data between ISPs is usually not symmetrical, some ISPs may have more data to transfer through a peering point than the connection can handle. When this situation occurs, the connection becomes a bottleneck. Although the peering point could be upgraded, only a few customers operating servers experience a problem, and the ISP where the server resides may very well be reluctant to upgrade the peering point due to the cost involved.

The protocol is connectionless, which means an HTTP message can occur without establishing a connection with the recipient. HTTP is a reliable protocol because it uses the TCP transport protocol, which provides a reliable error detection and correction facility. In Chapter 3, we will probe deeper into Transmission Control Protocol Internet Protocol (TCP/IP). For now, we will note that HTTP is transported by TCP within an IP datagram. 0. 1. Operation HTTP messages are stateless, connectionless, and reliable.

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